1.

(z^2 %2B y^2 %2B y*z)/(((x - y)*(x - z))) %2B (x^2 %2B x*z %2B z^2)/(((-x %2B y)*(y - z))) %2B (y^2 %2B x^2 %2B x*y)/(((-x %2B z)*(-y %2B z)))

Answer»

0 is the correct answer of the given question.



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